Device for and method of driving luminescent display panel
First Claim
1. A device for driving a luminescent display panel which is adapted obtain a display image by lamination-forming on a transparent substrate a luminescent element including an electrode and a luminescing function layer and causing a light from the luminescent element to be radiated via the transparent substrate in a direction of its intersecting the surface of the substrate at a right angle with respect thereto, comprising photo-electric conversion means that receives the light from the luminescent element which, by using as the interface the substrate surface of the transparent substrate or a substrate surface of a light guiding substrate disposed on the transparent substrate in a laminated state, is reflected within the substrate, to thereby produce an electric signal, and drive power setting means that, according to the electric signal obtained from the photo-electric conversion means, sets a luminescent drive power that is supplied to each of the respective luminescent elements.
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Accused Products
Abstract
Provided is a driving device that enables compensating for the decrease in luminance characteristic due to the aging of an EL display panel. On a transparent substrate 11 made of, for example, glass, there are lamination-formed a number of luminescent elements 20. By this, a light from the luminescent element is radiated, via the transparent substrate, in a direction of its intersecting a substrate surface thereof, thereby a display image is formed. The driving device is equipped with photo-electric conversion means 23 that, when receiving part of the light from the luminescent element 20 that, by using as the interface a substrate surface of the transparent substrate 11 or a substrate surface of a light-guiding substrate 72 disposed on the transparent substrate 1 in a laminated state, is reflected within the substrate, produces an electric signal, as well as drive power setting means 25 that sets a luminescent drive power that is supplied to each of the luminescent elements. By this construction, it is possible to compensate for the decrease in luminance characteristic due to, for example, the aging of the luminescent element 20.
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Citations
14 Claims
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1. A device for driving a luminescent display panel which is adapted obtain a display image by lamination-forming on a transparent substrate a luminescent element including an electrode and a luminescing function layer and causing a light from the luminescent element to be radiated via the transparent substrate in a direction of its intersecting the surface of the substrate at a right angle with respect thereto,
comprising photo-electric conversion means that receives the light from the luminescent element which, by using as the interface the substrate surface of the transparent substrate or a substrate surface of a light guiding substrate disposed on the transparent substrate in a laminated state, is reflected within the substrate, to thereby produce an electric signal, and drive power setting means that, according to the electric signal obtained from the photo-electric conversion means, sets a luminescent drive power that is supplied to each of the respective luminescent elements.
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8. The method of driving a luminescent display panel which is adapted obtain a display image by lamination-forming on a transparent substrate a luminescent element including an electrode and a luminescing function layer and causing a light from the luminescent element to be radiated via the transparent substrate in a direction of its intersecting the surface of the substrate at a right angle with respect thereto,
comprising the step of receiving the light from the luminescent element which, by using as the interface the substrate surface of the transparent substrate or a substrate surface of a light guiding substrate disposed on the transparent substrate in a laminated state, is reflected within the substrate, to thereby produce an electric signal, and the step of executing a setting operation of setting a luminescent drive power that is supplied to each of the respective luminescent elements according to the electric signal.
Specification